PVDF-HFP-based porous polymer electrolyte membranes for lithium-ion batteries

Ruiying Miao, Bowen Liu, Zhongzheng Zhu, Yun Liu, Jianling Li, Xindong Wang, Qingfeng Li

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

As a potential electrolyte for lithium-ion batteries, a porous polymer electrolyte membrane based on poly(vinylidenefluoride-hexafluoropropylene) (PVDF-HFP) was prepared by a phase inversion method. The casting solution, effects of the solvent and non-solvent and addition of micron scale TiO2 particles were investigated. The membranes were characterized by SEM, XRD, AC impedance, and charge/discharge tests. By using acetone as the solvent and water as the non-solvent, the prepared membranes showed good ability to absorb and retain the lithium ion containing electrolyte. Addition of micron TiO2 particles to the polymer electrolyte was found to enhance the tensile strength, electrolyte uptake, ion conductivity and the electrolyte/electrode interfacial stability of the membrane.
Original languageEnglish
JournalJournal of Power Sources
Volume184
Issue number2
Pages (from-to)420-426
ISSN0378-7753
DOIs
Publication statusPublished - 2008

Keywords

  • Electrolyte
  • Polymer membrane
  • Porous
  • Lithium-ion battery

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